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- First, make sure you are shooting in Manual mode and not in Auto-focus mode. To be certain, change the physical switch on the lens from AF to MF:
When in auto-focus, the camera is supposed to focus when the focus signal is triggered, but in some cases the internal focus is not fast enough to finish by the time the shutter signal comes and the camera won't fire if the focus is not finished. To eliminate the need for focus, set the camera to manual and now the camera will only listen to the release command. When shutting in shutter release mode, the camera should always be in manual focus. - On some Nikon cameras, the MF or AF focus is not on the lens, but on the camera's body itself, as shown:
For these cases, please flip the camera switch to MF, to make sure you are shooting in manual mode and that focus setting issues do not interfere with the shutter release issues. If you are using a shutter release extension cable, or a very long shutter release cable, please test without the extension cable first, or with a shutter release cable that is at most 6 feet in length. We have ran into many issues related with very long cable lengths and weak triggering signals.
Tip title Test with Short Cables For testing and verification that the shutter release works, do not use super long, or extension cord, shutter release cables.
- Based on our experiments, please pay attention to the following:
- Even though the shutter (S) is grounded by a physical signal, the actual triggering is a software trigger. The camera simply issues a software command to the camera to trigger the camera. This is important to realize, since the shutter release is NOT a hardware synchronization signal. We have seen cases where the camera was busy and all the shutter release signals were processed together, when the camera became available.
- On some Canon cameras, we noticed that if connecting the USB port, in tandem, some cameras may have an issue using the shutter release. If the desire is to use the shutter release in conjunction with the USB (tethering), the order in which the shutter release cable and the USB cables are connected may matter. Test your camera without the USB cable first, and using ONLY the shutter release cable. If this works, then experiment with the order in which the USB (tether) and the shutter release cables are connected to the powered camera.
Cables which work with our software:
For Sony A7III, the cables from Sony and Amazon weren’t the right ones. This is the cable that works: Kaiser 2S shutter release cord Sony - Kamera Express (kamera-express.nl)
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